import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Report from '../components/report/Report.vue'

Vue.use(VueRouter)

const routes = [
  {
    path:'/',
    redirect: '/login'
  },
  {
     path: '/login',
     component: Login 
  },
  {
    path: '/home',
    component: Home ,
    redirect:'/welcome',
    children:[{
      path:'/welcome',
      component: Welcome
    },
    {
      path:'/users',
      component:Users
    },
    {
     path:'/rights',
     component:Rights 
    },
    {
      path:'/roles',
      component:Roles 
     },
     {
      path:'/categories',
      component:Cate 
     },
     {
      path:'/params',
      component:Params
     },
     {
      path:'/goods',
      component:GoodsList
     },
     {
      path:'/goods/add',
      component:Add
     },
     {
      path:'/orders',
      component:Order
     },
     {
      path:'/reports',
      component:Report
     },

            ]
 },
]

const router = new VueRouter({
  routes
})

// 挂在路由导航守卫
router.beforeEach((to, from, next)=>{
// to 将要访问的路径
// from 代表从那个路径跳转而来
// next 是一个函数，表示放行
//     next（）放行 next（‘/login’）强制跳转
if(to.path==='/login') return next()

const tokenStr = window.sessionStorage.getItem('token')
if(!tokenStr) return next('/login')
next()
})

export default router
